Sheave housing



tar s PATENT FFlE.

KAT/IE8 H. FOGTE, O33 DEN'EZNNAEI, Gilli).

SI-IEAVE HOUSENG.

My invention relates to that class of housings intended for mounting in a mounting frame and to serve as a journal support for a sheave, and more particularly, to the form and manner of arrangement of the parts for eleasably locking the housing to the mounting frame; the object of the presentimprovei'nent being to provide a cheaply constructed housing that may be easily and expeditiously positioned and releasably locked in the aperture formed for it to seat in the mounting f1 line through changes in relative position the parts that may be brought about by simple in pulation, thus effecting economy by avoiding the use of screws or similar securing devices and obviating necessity for use of a tool; another object be ing to provide a face plate embodying means to take the end thrust of the easing without transi ting strain to the face plate itself, thus permitting the use of exceedingly thin metal for the face plate and doing away with the necessity and corresponding expense, of countersinhing around the apertur ed in the mounting frame for the recep ton of the housing, to accommodate the face i1). Le,

Tress and other objects I attain by meehanisni such as shown in the accompanying drawing, in which Figure l is a view in front elevation of a sheave housing embodying my invention, the )osition a sheave would occupy being indiled by dotted lines; 2 is a view in rea elew ion of the face igure 1. with the casing removed; Fig. 3 is a view in frontelevation of the casing with the face plate reino ed; Jig. is a sectional view taken on the line l)i2 of Fig. 3, oohing toward the upper end of the casing; T is a view sin ilar to Flg. a, but look- 1 t toward the lower end of the casing and in which the position the lower tongue of the face plate would normally occupy, is indicated in dotted lines; Fig, 6 is a view similar to 5, but showing the side walls the lower end of the casing sprung apart somewhat by the forwardly movement of the lower tongue of the face plate, substantially t is position this tongue would assume upon upwardlymovement of the face plate, being indicated by dotted lines; Fig. 7 is a view in vertical section taken on the line a;a of

' Fig. 1, showing the housing positioned in a plate shown in fragmentary vertical section of a mounting frame with the face plate in engagement with the face of the casing in normal closed and locked position, the position the sheave would occupy being shown in dotted lines; :Fig. 8 is a view in side elevation of a completed housing embodying the invention with a sheave mounted in it, showing the face plate with its upper end moved outwardly from the easing into open position and the housing positioned for enter the aperture in a mounting fran'ie, which latter is shown in tgmentary vertical s tion, and having a p01 .ion of t is side wall at the upper and lower front end of the casing broken out to more clearly show the then relative position of the cooperating parts of casing and face plate.

Similar numerals refer to similar parts throughout the several views.

While I ha-vepref-erably shown the casing and face plate of my improved sheave housing each as med from a single piece of sheet metal, it will be understood, that these parts or either of them, may be formed in other ways and by other means than a single piece of sheet metal by well known processes now in common use, and that the particular manner of supporting the sheave therein is not material in so far the present invention is concerned.

My improved sheave housing consists, substantially, of a casing 1 preferably formed of sheet metal, bent to form an upper cross wall 2, by which are spaced a pair of side walls 3, i, in each of which a centrally disposed opening 5 formed to provide an end support for a sheave journal 6.

Side walls 3, 4, are spaced apart at their lower ends by bending inwarc i a forwardly disposed endportion of each to meet on a median line and form a cross wall 7, which also may serve to take the thrust of easing 1 against the end of an aperture 8, formed in a mounting frame 9, for casing 1 to fit into.

Casing 1 is provided with an upper extension 10, which may be formed by cutting loose and bending outwardly and baclrwardly atongue of the metal from cross wall 2, to pull back casing 1 at its upper end into aperture 8, of mounting frame 9.

Extension 10 is preferably curved backwardly at its upper end to provide against ture 8 in case an abnormally thick mounting frame is engaged, and in which event extension 10 may be forced to yield and become permanently bent somewhat further backwardly as the housing is moved to seated position in aperture 8, or, if preferred, extension 10 may be irovided vith forwardly facing edges at its upper end, adapted to dig, with a baclrivardly forcing tendency, more or less deeply into a rear face of mounting frame 9, to pull back casing 1 at its upper end into aperture 8, irrespective of a considerable range in thickness of the mounting frame engaged.

Casing 1 is also provided with a lower extension 11, which may be formed from a rearwardly disposed lower end portion of each of side walls 3, 4:, and may have forwardly facing rearwardly beveled front edges 12, 13, thus forming an extension adapted to embed more or less deeply in the rear face of mounting frame 9, as casing 1 is seated in aperture .8, irresp ctive of a considerable range in thickness of the particular mounting f "ame engaged.

Casing 1 further provided at the front with means which may take the form of flanges 14;. 15, at its front edges, adapted to engage a front face of mounting frame 9 and arrest the passage of easing 1 in one direction into aperture 8, and clamp mounting frame9 between the rear faces of flanges 14, 15, and the forwardly facing faces of extensions 10 and 11.

And a face plate 16, also preferably formed of sheet metal, having a centrally disposed aperture 17 atthe upper end of which a tongue 18 of the metal displaced to form aperture 17, is turned inwardly and provided with an upwardly turned extension 19 to occupy a space between the outer face of cross wall 2 of casing 1 and the upper end of aperture 8 and preventupward movementof the housing when positioned in aperture 8.

Extension 19 is provided with a reduced portion 20 adapted for inwardly and outwardly passage through a runway 21 extending backwardly from the front edge of upper cross wall 2 of casing 1, upon the side edges of which reduced portion 20, offsets 22, 23, are formed to fit into passages 24, 25, extending laterally from the side edges of runway 21 at its inner end, lock face plate 1 6 against outwardly movement at the upper end, and also to engage flanges 26, 27, which are turned upwardly at front edges of cross wall 2, upon opposite sides of runway 21, to provide detents and limit the outwardly movei'nent of the upper end of face plate 16.

Extension 19 is also provided with clownwardly facing bearing faces 28, 29, adapted to engage the outer face of cross wall 2, of

casing 1 upon opposite sides of runway 21,

4, of casing 1 and into which the side e and limit the bodily downward movement of face plate 16, and is further provided with an upper bearing edge 30 for engagement with the upper end of aperture 8, thus adapting extension 19 to serve as means in cooperation with the end of aperture 8 to take the end thrust of casing 1 without transmitting strain to face plate is itself.

Tongue 1S, more-over, is provided with upwardly facing faces 31, 32., to engage the under inner face of cross wall 2, of casing 1 and limit the bodily upward movement of face plate 16.

Formed from a part of the metal displaced to form fa e plate aperture and bent inwardly at the lower end of said aperture, is a tongue 33, terminating in a laterally extended enlar -cment Fit. the side extensions 35, 86, of which are each provided with a forwardly facing, back rely beveled edge 3i"38 adapted to en age a rearvardly facing edge of each of 7 de walls 3, i, to provide which a pair of slots 39, 4:1), are preferably formed one in each side wa sions 35, 36, of enlargement 3 1-, may be adapted to lit, or this engagement may be directly upon the rearwardly facing edges of side walls 3, 4t, and slots 39, 40, climinated.

The arrangement is such that forward inovei'i'icnt of tongue 33, vill result in a wedging apart slightly of side walls 3, at, at their lower: ends by reasonof the action of the forwardly facing beveled edges 3738 of side extensions 35, in sliding engagement with the front edges of slots 39, 40.

At the lower end of the front face of casing 1 side flanges may be bent inwardly to rm an engagement for the under side of face plate tongue 3?), ti ES providing additional means for liiniti the bodily downward movement of fa 16, and if desired, slight depression" 8. d4, be provided at the base of upturned flanges 26, 27, upon the upper face of cross wall 2, of casing 1, for 2?}, of face plate extension 19 to fit into to better "intain face plate 16 in open position to facilitate entering the housing into frame aperture 8.

To assemble for use, a sheave mounted on a journal for wh ch rivet may be used" between .s' by passing the ends 3 of the rivet, r :1 openings 5 in walls 3, 4:, provided to receive them and support the journal, a face plate 16 then positioned as shown in l and the outwardly extending rlvct e headed up upon the outer 3, 4-, of easing 1.

s first a shoulder iirst pushe l u oucd until offsets 2, 23, of face plat-e ezteninto passages 24, 25, and lower tongue 33,

sion 19, have passed upwardly out of passages 2 25, in cross wall 2 of casing 1.

Face plate 16 is then pulled forwardly at its upper end with the downwardly facing faces of offsets 22, 23, of face plate extension 19, substantially in sliding engagement with the outer face of cross wall 2 of easing 1, and this forwardly movement continued until arrested by engagement of the forwardly facing faces of offsets 22, 2, with the rearwardly facing faces of flanges 26, 27, of cross wall 2 of easing 1, when face plate 16 will have assumed, substantially, the position relative to casing 1, shown in Fig. 8.

As face plate 16 moves upwardly in sliding engagement with the face of casing 1, lower tongue 33 is carried upwardly at its point of juncture with the face plate and 'lorwardly at its rear end, moving forwardly the forwardly facing baclrwardly and outwardly beveled edges of side exnsions 36, in sliding engagement with 'rwardly facing front edges of slots and wedging a art slightly side walls a, l, of casing 1 at the lower end.

The tendency of walls 3, l, to spring together again, develops a force tendii'ig to pull tongue 33 backwardly and face plate 16 backwardly and downwardly lino normal :losed locked position and adapts face )late 16 for reciprocal movement.

is the upper end of face plate 16 moves outwardly from casing 1 the pressure of the downwardly facing faces of offsets 23, of extension 19 upon the outer side of cross wall 2 of easing increases and will ordinarily be found. .sulncientwhen ofisets 22, 23, have come into eng ment with flanges 26, 2?, of cross wall 2, to frictionally maintain the upper end of face plate 16 in open position substantia as shown in Fig. 8, or if preferred, depressions 4-3, 444:, m I be provided for retaining en qement with offsets 22, 23, to more positively maintain face plate. 16 in open position at its upper end.

lVith the parts in this position the hou ing is entered, upper end first, into the ame aperture, the lower end pushed be l; and the housing then seated by a bodily downwardly movement with the lower cross wall 7 of easing 1 in engagement with the lower end of the frame apertureand the upper end of extension 19 of the face plate, substantially in line with the upper end of the frame aperture.

A mere touch will then suffice to release the face plate from open position at its upper end, allowing it to move into closed position, with the upper portion of extension 19 of upper tongue 18 interposed between the top of easing 1 and the end the frame aperture, and to move downwardly into locked aosition. with offsets 22 23 fitted drawn backwardly into normal position in slots 39, d0, by the springing together again of walls 3, l, of the casing.

To remove the housing from the mounting frame it is only necessary to move the face plate upwardly and at its upper end outwardly, intoposition described for entering the frame aperture, raise the housing bodily upward until the extension at lower end of easing 1 clears the. inner lower edge of the frame aperture, draw the housing 't'orwai'dly, lower end first, and rcn'iove it from the aperture.

The face plate as shown in the provided with a centrally dispos, embossed portion to overlie flan v at front of casing 1, as well as to still'rn tne plate. to avoid buckling when pulled out in to open position at its upper end, and a surrounding flat edge portion, to overlie the front face of the mounting f aine around the frame aperture in closely i .ting en ment, to avoid the necessity of count ing around this aperture to 216-2011 flanges 14, 15, and face plate 16, and effect an economy in making the frame.

Thus I have shown and described a sheave housing adapted through the form and manner of arran 'ement of its parts, for loclc'ug engagement with a mounting frame irrespective of considerable ran e thickness of the particular 5 I and provided with a n n-resilient face pate entirely devoid of undue strain and embodying features characteristic of a resilient plate.

A housing, moreover, that may be. in stalled in a mounting frame with. extreme ease and rapidity.

Advantageous features opening for the device a wide field of utility that otherwise would remain closed.

0f course, nodifications of mater al as well as of the form selected for illustration, will suggest themselves, and these and other modifications to which the invention is susceptible, need not be illustrated, as modifications within the spirit and scope of the invention as herein described and pointed out in the claims, will be obvious to those skilled in the art.

What I claim is 1. A sash pulley having a sheave, a housing to seat in a mounting frame and adapted for clamping engagement with a front and a rear surface of said frame, and having side walls between which the sheave is positioned, said walls being adapted for reciprocal movement to and from each other at one end thereof, and a face plate movably connected to said housing, and means in coperation with the face plate and housing whereby said face plate is first brought into movable engagement with the housing at one end thereof and then moved bodily towards the opposite end of the housing in sliding engagement with the housing to removably lock the housing and pulley to the mounting frame.

sash pulley comprising a pull y, a i ped housing therefor having its loop at the upper end and its free ends open at the bottom thereof, a tongue projecting upwardly from the loop to engage the rear face of a mounting frame, projections formed at the free ends of said yoke to engage t is rear ice of the mountin frame at the lower end or said housing, a face plate for said housing having a rearwardly projecting tongue in engagement at its free end with the free ends of said yoke, and forming a fulc" nn for the movement of said face plate vertically relative to said housing, and latch mechanism serving to latch and release the upper end of said face plate relative to said housing, said latch mechanism being adapted to he tripped and released pressure of the face plate toward the front of the mounting frame in inserting the housing into position in the mounting frame.

2-3. A sheave housing comprising, a casing, with means for engaging a mounting frame, irrespective of a considerable range in thickness of the particular mounting frame ongaged, and adapted to seat in an aperture in said frame and to serve as a journal support for a sheave, a face plate, centrally apertured and having an upper and a lower rearwardly disposed tongue, complemental interlocking and engaging means on said tongues and on the casing to connect the face plate in limitedly movable reciprocal engagement with the casing and to maintain said face plate in selected open or closed position at one end, relative to the casing, and means, in cooperation with the end of the aperture in the mounting frame, to take the upwardly thrustof the casing when positioned in said aperture, and releasably lock the housing to the mounting frame.

i. A sheave housing comprising, a casing, to serve as a mount for a sheave and to fit into an aperture in a mounting frame and provided with means to engage the mounting frame irrespective of a considerable range in thickness of the particular mounting frame engaged and prevent inwardly and outwardly movement of the casing When positioned in said aperture, and having side walls, inwardly turned at their lower ends, adapted for reciprocal movement, and a face plate, having a lower, rearwardly projecting, tongue adapted for slidingly and wedgingly engagement with the reciprocative walls of the casing, to secure the face plate in reciprocal engagement with the casing, an upper, inwardly and upwardly bent, tongue, adapted, in cooperation with the upper end of the casing, to limit the range in reciprocal movement of the face plate and,rin cooperation with said end and with the reciprocativc walls of the casing, maintain said plate in selective position relative to the casing, and to provide means, operative to arrest up- 'wardly movement of the casing when positioned in the aperture in the mounting frame and lock the housing to said frame.

A sheave housing comprising, a casing, to serve as a journal support for a sheave and to fit into an aperture in a mounting frame and having at its upper end a forwardly facing, resistibly yielding projection to engage the rear face of the mounting frame, irrespective of a considerable range in thickness of the particular mounting frame engaged, and prevent outwardly movement of the upper end of the casing when positioned in said aperture, and having side walls adapted for reciprocal movement and provided with a lower extension having a forwardly facing, downwardly and rearwardly beveled part, to engage the lower rear edge of the aperture in the mounting frame and to embed therein, with a baokwardly forcing tendency, more or less as may be required by the range in thickness of the particular mounting frame engaged, to draw back and hold the lower end of the casing against outwardly movement from said aperture, and with means to engage a front face of the mounting frame and arrest movement of the casing in one direction into said aperture, and a face plate, reciprocally mounted on the casing, adapted, in cooperation therewith and with the mounting frame, to lock the housing to the mounting frame.

Executed at Cincinnati, Ohio, this 19th' day of September, 1922.

JAMES H. Foorn. 

